Fuel cell adapter cap



FIG. 1 is a top perspective view of a fuel cell adapter cap of our new design.

FIG. 2 is a bottom front perspective view of the fuel cell adapter cap of FIG. 1.

FIG. 3 is a front elevational view of the fuel cell adapter cap of FIG. 1, the back, the right side, and the left side elevational views being identical thereto.

FIG. 4 is a top plan view of the fuel cell adapter cap of FIG. 1; and,

FIG. 5 is a bottom plan view of the fuel cell adapter cap of FIG. 1. 

CLAIM The ornamental design for a fuel cell adapter cap, as shown and described. 